Ant

[edit] Add Xlint checking

<target name="compile" description="Compile code">
       <mkdir dir="${bin}"/>
       <mkdir dir="${lib}"/>
       <javac srcdir="${src}" destdir="${bin}" 
              includeAntRuntime="no" 
              classpathref="lib.path" 
              debug="${compile.debug}">
           <compilerarg value="-Xlint"/>
       </javac>
</target>

(Source)